Ohio Rev. Code Ann. § 5711.22
(B) For tax years before tax year 2009, boilers, machinery, equipment, and personal property the true value of which is determined under division (B) of section 5711.21 of the Revised Code shall be listed and assessed at an amount equal to the sum of the products determined under divisions (B)(1), (2), and (3) of this section:
(D)
(3) As used in division (D)(2) of this section:
(F) All manufacturing equipment as defined in section 5711.16 of the Revised Code shall be listed and assessed at the following percentage of its true value in money:
(G) Unless otherwise provided by law, all other personal property used in business that has not been legally regarded as an improvement on land and considered in arriving at the value of the real property assessed for taxation shall be listed and assessed at the following percentages of true value in money:
(H)
(1) For tax year 2007 and thereafter, all personal property used by a telephone company, telegraph company, or interexchange telecommunications company shall be listed as provided in this chapter and assessed at the following percentages of true value in money: